[XSD-to-XML] Support XSD validation for data.xmldatamodule

[SasinduDilshara]

There are few sub tasks in this task

• Add design document for support validation through XSD in XML to record conversions #6936
• Implement XSD validations in XML to record conversions #6937

[SasinduDilshara]

Currently, the Flat sequences and Flat choice elements in the XSD are implemented with the tests according to the https://docs.google.com/document/d/1nz-Osw3kyLpSzkBfZkGIcM0BPzth_ScEVeatAYrXFMw/edit?tab=t.0#heading=h.xzw1i3ooqc6v

Had a offline chat with @MaryamZi and @hasithaa to discuss about the priority subtasks and implementations of nested sequences /choices in this feature and working according to that.
I will update this issue with future implementation details

[SasinduDilshara]

Created a document with possible XML to record options https://docs.google.com/document/d/1rc6QGqgmrqph5cbd5kWlJEbc4A9zFBIwc-mfnkmTJ_I/edit?usp=sharing
Currently this is under the review

[SasinduDilshara]

I was able to implement the XSD choice, choice arrays, XSD sequences and sequences arrays for the XSD along with Element occurences.

Following are some testcases with the implementation

[FiveO]

The requested feature #6937 should support using a XSD file to validate a XML. Not that the XSD again has to be converted to recods. Please make sure that on the data.xml module a xsd file can be passed to validate the xml.

[SasinduDilshara]

The requested feature #6937 should support using a XSD file to validate a XML. Not that the XSD again has to be converted to recods. Please make sure that on the data.xml module a xsd file can be passed to validate the xml.

This will also be supported from data.xmldata module after fixing this issue..